Cultivator



v. GUERRA Y MARRERO.

CULTIVATOR.

' APPLICATION map AUG.I0, 1920.

I 1,413,910. Patented Apr. 25, 1922.

4 SHEETS-SHEET I.

Zlrwmfloz Vice)? u Guerr y Marrero v. GUERRA Y MARR'ERO.

CULTIVATOR.

APPLICATION FILED AUG-10, 1920.

1 ,4 1 3,9 1 0. tented Apr. 25, 1922.

4 SH ETSSHEET 2- ii l gwuen roz Vicenie Guerra Herrera v. GUERYR'A Y MARRERO.

CULTIVATOR.

I APPLICATION FILED AUG-I0, 1920.

Patented Apr. 25, 1922.-

S H E E T 4 S-SHEET 3.

, Uweni Vicente Gagrra. yfi'zzrrero V. GUERRA Y MARREROQ I CULTIVATOR. APPLICATION FILED AUG-l0, 1920.

1,41 3,910. dte ted Apr- 25, 1922. I

4 SHEETS-SHEET 4.

gwueul'oz V Vz'cenie Guerra y/flr m I after" u; r

ouLrivAmo'n.

.To al? w from it may concern Be it known that I, VICENTE GUERRA' Y li iannnno, asubject of the King of Spain, and resident of (Jaibarien Apartado 161,-

Cuba, have invented certain new and useful improvements in Cultivators, of which the following is a specification.

This invention relates to cultivators; and its principal object, stated briefly,'is to provide a machine of the character indicated having improved means for operating the gi'ound treating devices in such a Way as to cause them to travel in an elliptical paththrough as nearly as possible the same niovements imparted to such devices when ope'r-- ated manually, andalso' having'im'proved means for controlling the'activit-y'of the' clutches comprised in the operating connections between said devices and the'faxleand for simultaneously varying the position or the said devices with relation to the ground;

According to the invention, the groundtreating devices (which term is intended to cover both the hoes,-knives'or other imple-" ments which actually engage the'soil and chop down the weeds, and the carrieibars or arms to whichthey are attached) are supported and controlled'by means'of connec tions pivotally related'to an elevated, floating shaft located above the axle and the lat ter is equipped'with a" set of cranks slidably engaged in longitudinal slots provided in certain of the-connections; the arrangementbeing such that during the rotation of the axle, the cranks operating in said slots will cause the ground-treatlng devlces to successively advance, descend into engagement ward so as to withdraw the sliding members of the clutches from engagement wlth the tion as just described, they are shifted end-- wise and, in consequence, move thefloa-ting shaft laterally, said shaft acting, in turn,

through the previously i'nentioned connections, to lift the ground-treating devices into inoperative position with relation to the ground.

vantages are comprised" in the invention, as will presently appear; but it is to be understood that the invention is not limited to Other and further improvements and ad' Speeificationiof teiter sratent 'PatentedApry2i Application filed August 10, 1920. Serial No. 402,673; '7 i w the precise struotura l details of the eInbodiplan view of the improved" r crea es;

ZVICENTE eunnim ymaneiino, or Cami remit; tam. j,

Fig.3 is a longitudinal vertical section on I line 83, Fi 1, I

m 4 is a transverse vertical section'on line 4.4,F

Fig. 5 is a detail viewshowing a modified system of connections for effecting the oper-' F ation ofthe groundtreating devices.

big. dis aplan view ofa modified form' of implement.

' Referring more particularly it the 'drawing, indicates the; frameor' chassis of the machine, the longitudinaltside beams of which are provided with central bearings 2 wherein the main shaft-oraxle3 is 'journaled, said axle carrying adjacent'its ends' v the supporting or ground Wheels 4 which are loosely mounted thereon; These' wheels 4 have rigidly secured to them [a I pair of sprockets 5 which'are connected by chains 6 tosmaller sproeketsTloosely mounted on a cross-shaft 8 journaled in brackets 9 fix d to the rear portionsof the aforesaid beams. The sprockets? areprovfided with toothed hubs '10 adapted'to'be alternatively engaged with ordisengaged fromra pair of sliding clutch 'members 11', which are splined to l shaft 8 to notate the same when coupled-to I hubs l0'and which project loosely through the slotted central portions 12'0f a pair of spreader bars 1.3, the operationof "the clutch members being controlled by these spreader] bars inthemanner subsequently explained. l

The rotation of shaftS istransmitted to axle '3 by means-of a "large sprocket-'14, connected by "a chainlfi with a small sprocket 16 fixed to said axle:

V Themain shaft or axle 3 is provided'with a set of cranks 17, disposedat suitable 'an gles to one another. and utilized toactuate the bars 18 to which the ground-treating implements 19' are attached. There are sixv of-these bars 18 inthe construction illust'rated (though such numbe -of course,-is purely arbitrary), arranged in three pa1rs;

and there arefourof the cranks 17, thetwo central cranks being operative-1y associated with the two central'bars, and the two outer or end cranks being each associated with the adjacent outer pair of bars, as will be seen in Fig. 1. Each crank is slidably engaged for that purpose in a longitudinal slot provided at the forward, end of a rodQO, such slot being here shown as formed by a bridge-piece 21 fastened upon the upper surface of the rod, which latter is pivoted at its rear end to the low-er end of a rocker arm 22. The upper end of each rocker arm is rigidly fastened to the upper end of a second rocker arm. 23, the two= arms 22 and 23 conjointl-y forming a bell-crank lever, which is loosely pivoted at its apex upon an elevated cross-shaft 24 disposed above the axle 3 and having pivoted to its opposite ends the upper or front ends of the two spreader bars 13. The rods 20 are provided at their forward ends with vertical openings, through which slide the upper ends of bolts 25, the lower endsv of which slide through similar openings in the associated bars 18, the intermediate portions of the bolts being encircled by exp-ansible coil. springs 26 which bear at opposite ends against the parts 20 and 18, as shown. T he cede.

front rocker arms 231have their lower portionsslotted longitudinally, as at 27,. to permit the sliding engagement of the cranks 17 therein, so that the said cranks will impart rocking movements both to the bellcranks 2223 and to the rods 20, the latter turning about their pivotal connections with the parts 22, and the former about the elevated cross-shaft 24.

Assuming that the clutch connections are coupled up to effect rotation of the axle 3 during the forward movement of the machine, the several cranks 17 will operate to rock the bell-cranks 2223 forward and backward, with the result that the bars 18 carrying the ground-treating implements 19 are caused to. alternately advance and re The rods 20 are also rocked up and down by the cranks and, in turn, transmit their movements to the bars 18 and the implements 19,-which latter are thereby forced to travel/in a somewhat elliptical path closely resembling the movements imparted to a spad'e,.hoe or analogous device whe-n'operated manually, the parts 19 being illustrated as hoe shape-d. The springs 26 assist in the movements of the carrier. bars 18 and exert a cushioning action which tends to prevent the transmission of excessive shocks, as will be understood.

The operation of the spreader bars 13 incidental to the closing and opening of the clutches, is preferablyeifected by a lever 28 pivoted to a bracket 29 attached to the rear beam of the chassis adjacent the drivers seat 30, said lever having associated with it a, detent 31 for coaction with a toothed seg- Lever 28 has a forwardly and portion is slotted longitudinally as at 3%; and through this slot passes a horizontal cross-bar 35 which is attached at its ends to the adjacent portions 36 of the spreader bars, the arrangement being such, therefore, that when said lever is rocked in one direction or the other about its pivot, the cross-bar'35 will be shifted laterally by the lever arm 33 and, in consequence, will impart an endwise movement to the spreader bars. The movement of the spreader bars will be transmitted, in turn, to the floating cross-shaft 2a, with the result that the bellcranks 22-23 will be shifted to one side or the other and, through the intermediary of their connections with the hoe bars 18, will move the latter toward or from the ground. The portions 36 of the spreader: bars converge as shown in. Fig. 1, and terminate adjacent a pair of depending posts 37 fastened to the rear beam of the chassis; from which it follows that when the spreader bars are forced rearward, their inclined p'or tions 36 will engage said posts and will be pressed or cammed inwardly toward each other, said bars being sufficiently thin and resilient to permit them to flex and so perform the movement in question. During this movement, the walls of the slotted portions 12 of the bars will engage the collars 38 provided on the inner ends of the clutch sleeves 11 and, as the movement continues, will shift said sleeves inwardly along shaft 8, thus uncoupling them from the clutch hubs 10 on the sprockets 7, so that the rotation of said shaft and, hence, of axle 3, will thereupon cease. Movement of the controlling lever 28 in the opposite direction will, of course, effect a forward movement of the spreader bars, which latter will tend to expand or move outwardly away from'each other, due to their resiliency, as their inclined or cam portions 36 pass across the posts 37; the forward movement. of the spreader bars producing a lowering of the hoe bars and theirhoes toward the ground. The clutch sleeves 11 are automatically coupled with the clutch hubs 10, as the spreader bars advance, by means of expansible coil springs 39 interposed between the collars 38 and the sprocket 14 and encircling the shaft 8. v r p The machine may be drawn over. the ground by draft animals hitched to a pair of shafts -10 connected to the front beam of the chassis (which shafts, if preferred, may be replaced by a single pole or tongue), or

it may be propelledmechanically by means 'of' a suitable motor and driving connections 20' and their bridges 21 and the spring-controlled bolts 25. According to this arrangement, the bell-cranks are replaced by rocker arms or levers 41, which are pivoted at their upper ends to the elevated shaft 24 and are formed with vertical slots or channels 4:2, each having a cross-pin 43 spanning it. The hoe-carrying bars 44 are pivoted at their rear ends to the lower ends of the rockers 41 and are formed with-longitudinal slots 45 in which travel lateral pins or rollers 46 attached to the lower ends of aset of floating links 47, one for each carrier .bar. These links 47 are formed with longitudinal slots 48 in which are engaged both the cross-pins 43 and the axle cranks 17. Rotation of the axle will, therefore, cause the hoe bars to travel in elliptical paths similar to those of the bars 18; the rockers or levers 41 swinging forward and backward and thereby im parting corresponding endwise movements tothe hoe bars 44 whlch are also raised and lowered due to the travelof the rollers 46in slots 45. The above-mentioned rocking movements of the parts 41 are'produced, of"

course, by the engagement of thec'ranks 17 in slots 48, in which latter the cross-pins in the slots 42 are also engaged.

Fig. 6 represents a modified formof' ground-treating implement comprising a flat. substantially rectangular blade 49 formed Witha central longitudinal guide rib 50 which fits 'slidably in a longitudinal groove 51 provided in a T-shaped member The cross-piece of the latter has pivoted to its opposite ends a pair of flat, angular members 53 Whose long, lower arms converge and whose shorter or upper arms are slidably connected With the carrier bars 18 or Grapples or anchors 54 may be attached to the carrier bars to adjust the position of the ground-treating implements in conformity with the widths of the furrows being dug.

I claim as my invention 1. In a cultivator, the combination of a chassis; supporting Wheels therefor; an axle journaled in the chassis and whereon said wheel are mounted; a set of ground-treating devices; an elevated cross-shaft; supporting connections for said ground-treating devices pivotallv related to said shaft and comprisingrmembers provided with longitudinal slots; and a set of cranks on said axle slidably engaged in said slots for causing the ground-treating devices to travel in an elliptical path when the axle is in motion.

2. In a cultivator, the combination of a chassis; supporting wheels therefor; an

axle journaled in the chassis and whereon said wheels are mounted; anelevated crossshaft; a set of bell-cranks plvotally suspended therefrom at their apices, one arm of each hell-crank being longitudinally slotted; a groumttreating device pivoted to the other armct each bell-crank; a rod operatively rethe first-named and the second-named slots,

so as to cause the ground-treating devices to travel in an elliptical path when the axle is inlmotion. I I a V 3.:In a cultivator, the combination of -a chassis; supporting wheels therefor; an axle journaled in the chassis and whereon said wheels are mounted ;-an elevated cross-shaft;

a set of bell-cranks 'pivotally suspended 4' therefrom at their apices, one'arm of each bell-crank being longitudinally slotted; a.

ground-treating device pivoted -to the lower end of the other arm of each bell-crank;a

rod pivoted to the said lower end'of each second-named bell-cranl'a arm-and provided With a longitudinal slot; a cushioning device 'slidably engaged atopposite ends with each of said rods'and the associated ground-treatingdevice; anda setof cranks on said axle slid'ablyengage d in boththe first-named and the second-named slots, so as to cause the ground-treatingdevices to travel inan elliptical path when. the axle is inmotion;

4, In a cultivator, the combination of a chassis; supporting wheels therefor; an axle journaled in the chassis and" wliereon said wheels are mounted; a set of' ground-treab lng devices; means associated w th each ground-treatingdevicefor guidingand'controlling its movements, each of said means comprising an element having a longitudinal slot; and a set of cranks on said axle slidablyengaged in said slots to operate the guiding and controlling means and thereby cause the ground-treating devices to travel in an elliptical path when the axle is in motion. H

5. In a cultivator, the combination of a chassis; supporting wheels thereforyan axle journaled in the chassis and whereon said wheel are loosely mounted;mechanism, including clutching means, for connecting said Wheels with said axle to rotatethe same; a set ofground-treating devices; means operated by the axle for actuating them; and

means for simultaneouslycontrolling the activity of the clutching meansand'thetion of the ground-treating dvices.

6. In a cultivator, the combination of a posichassis supporting wheels therefor; an axle journaled inthe chassis and whereon said wheels are looselymounted; mechanism, 1n-

eluding clutching means, for connecting said wheels with said axle to rotate the same; a

set of ground-treating devices; means operated-by theaxle for actuating them ;v and.

.means for simultaneously uncoupling the clutching means and shifting the groundtreating devices'into inoperative position with relation to the ground.

7. In a cultivator, the combination of a chassis; supporting-wheels therefor; an axle journaled in the Chassis andwhereon said Wheels are looselymounted; mechanism, in-

eluding clutch means,- for :connecting-said wheels with said axle to rotate the same; a set of ground-treating devices; means operated by the axle for-actuating them; and a cam mechanism for simultaneously control-i hug the actlvity of the clutching mean and,

Wheels with said axletto rotate thesame; a

Set of ground-treating ,devices means operated by the axle for actuating them; an elevated shaft; supporting connections forthe ground treatingdevices suspended from said shaft; a-nd means for s multaneously operating the clutching means and shifting said shaft laterally'to vary the position of the ground-treating devices with relation to the ground.

9."I11 a cultivator the combination ofach assis; supporting wheels therefor; an axle! and Whereon said journaled in the chassis Wheels are loosely mounted; mechanism, 1n:

eluding clutching means, for connecting said Wheels with said axle to rotate thesame; a set of ground-treating devices,-meang operated by the axle for actuating them; anrelevated shaft; supporting connections folpthe.

1,413,910; :r f x ground-treating devices suspended :from said .rshaft; avpair'of barsQfor controlling theractivity of the clutching means connected with said shaft; and operating ,means :for said bars adapted toimpart endwlse. movements to them during their operation soras to shift said shaft laterally andthereby vary the position ofthe groundrtreatjing devices With v relation tow the ground.

:10. In a cultivatoigthe combination of a chassis; supporting Wheels therefor ;'-an axle journaledzin the chassis and whereonsaid Wheels are lOOSQlTyJl'lOIlIliIQCl; mechanism, in-

cluding clutching means for connecting said Wheels Withsaid axle to rotate the same; a set of ground-treating dev1ces';'means operated by the axle for actuatmg them; an eleshaft; a pair of spreader bars for controL ling the activity of the clutching means connected With said shaft; and operating means forthe spreader barg adapted to force them inward toward each other and to simultaneously move them endwise, thereby tosimultaneously open the clutching means and. shift said shaft laterally to vary the position of athe ground-treating devices With relation to the ground.

Signed at'l-labana, Cuba,this 3rd day of August, A. D. 1920.

VICENTE .GUERRA Y *MARRERO.

vvated shaft; supporting connections for the ground-treatlngdevices suspended from said 

